So first, LISTEN to your body
second, EAT SLOWLY. It takes 20 mins for your brain to recognize your belly is full. Drink a glass of water before you eat, then eat slowly. Savor every bite.
third, as your self WHY AM I EATING? Are you eating because you are hungry, or bored, or upset about something. Make sure you are eating because you are actually hungry and not just thirsty.
Fourth, EAT ENOUGH CALORIES. Starving yourself is counter productive. If you eat less than 1200 calories a day, your body starts to store your fat. That is right, stores it. Makes you fatter. Did not know that huh? So eat enough calories. Break up your calories in multiple meals and only eat when you are actually hungry (see #3)
Here is a good site with tips on how to feel full longer, for those of you that like that full feeling.
And I leave you with a work out too.. CRAZY!
Have a very fit day!